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Texas Instruments TLV431BQLP — Analog & Data Acquisition

TLV431BQLP Shunt Voltage Reference, ±0.5% Tolerance, TO-92-3

MPNTLV431BQLP
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Texas Instruments TLV431BQLP, adjustable shunt voltage reference, ±0.5% tolerance, 15 mA output, 1.24V to 6V, TO-92-3 through-hole package, -40°C to 125°C.

$0.5835Ref. price · indicative, final on quote
Texas Instruments TLV431BQLP datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

TLV431BQLP specifications
ParameterValue
Output typeAdjustable
MountingThrough Hole
Reference typeShunt
Voltage - output6 V
Voltage - output (Min (Fixed))1.24V
Output current15 mA
Current - cathode100 µA
Operating temperature-40°C~125°C(TA)
PackageBulk
Tolerance±0.5%
CaseTO-226-3, TO-92-3 (TO-226AA)

Product details

Precision shunt reference in a through-hole TO-92

The TLV431BQLP is a low-voltage, three-terminal adjustable shunt regulator from the TLV431 family, specified with a ±0.5% reference tolerance. It operates as a shunt reference, sinking current through the cathode to regulate the output voltage set by two external resistors. The output is adjustable from 1.24 V up to 6 V, with a cathode current range from 100 µA to 15 mA. The 15 mA output current ceiling defines the minimum cathode resistor value and the maximum load the shunt can sink while maintaining regulation.

TO-92-3 package — board-level fit and replacement

Housed in a TO-226-3 (TO-92-3) through-hole package, the TLV431BQLP is a direct-fit replacement for legacy shunt references in existing PCB layouts. The three leads — cathode, anode, and reference — follow the standard pinout for the TO-92 family. The through-hole form factor is preferred for prototyping, rework, and applications where vibration resistance or manual soldering is a factor. No exposed thermal pad; the junction-to-ambient thermal resistance is set by the lead length and board copper.

Frequently asked questions

What is the tolerance of TLV431BQLP?

The TLV431BQLP is specified with a ±0.5% reference tolerance. This is tighter than the standard TLV431 (typically ±1.0%), making it the preferred variant for precision feedback loops in power supplies and voltage monitoring circuits.

Is TLV431BQLP equivalent to TL431?

The TLV431BQLP is a lower-voltage variant of the TL431 family. It shares the same three-terminal shunt regulator topology and is pin-compatible with the TL431 in the TO-92 package. The key difference is the TLV431's lower minimum reference voltage (1.24 V vs 2.495 V for the TL431), which suits designs operating from a 3.3 V or lower rail.

What is the output current rating of TLV431BQLP?

The TLV431BQLP can sink up to 15 mA continuous cathode current. The minimum cathode current for regulation is 100 µA. The 15 mA ceiling sets the minimum value for the cathode resistor and the maximum load the shunt can regulate.